// 一次性加载
Ext.onReady(function() {
			var panel = new Ext.TabPanel({
						width : 300,
						height : 200,
						items : [{
									title : "面板1",
									height : 30
								}, {
									title : "面板2",
									height : 30
								}, {
									title : "面板3",
									height : 30
								}]
					});
			panel.render("hello");
		});